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Reptile [31]
3 years ago
7

Severe or sudden changes in Earth's atmosphere can cause entire species of animals to die. When all of the members of species di

e out, it is called
Chemistry
1 answer:
Oduvanchick [21]3 years ago
7 0

Answer: Extinction

Animals on the verge of extinction are considered endangered species. Some could argue that the phrasing "threatened" is synonymous to "endangered". Some classify extinction based on if the species is completely wiped out in the wild, or if the species is completely gone (both in the wild and in zoos for instance). Extinction events are not solely due to the changes in atmosphere, but also due to lack of food or habitat, among other possible factors.

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2 years ago
What is the mass of 1.2 x 1023 atoms of arsenic?
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14.93 g

Explanation:

First we <u>convert 1.2 x 10²³ atoms of arsenic (As) into moles</u>, using <em>Avogadro's number</em>:

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Then we can<u> calculate the mass of 0.199 moles of arsenic</u>, using its<em> molar mass</em>:

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Thus, 1.2x10²³ atoms of arsenic weigh 14.93 grams.

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3 years ago
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Explanation: I got it wrong on my test :( and got this answer as correct.

6 0
2 years ago
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matrenka [14]

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Yes.

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i think ionic?

Explanation:

hope this helps

6 0
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